#5977BF
Closest named color: Windows Blue (#3778BF). oklch(57.9% 0.117 265.8), rgb(89, 119, 191).
Aa
Black text reads best on this color (4.81:1).
About this color
#5977BF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.117 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.033 away. Black text reads best on it, at 4.81:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.81:1 |
| White text | 4.36:1 |
Values
| HEX | #5977BF |
| RGB | rgb(89, 119, 191) |
| HSL | hsl(222, 44%, 55%) |
| OKLCH | oklch(57.9% 0.117 265.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #5977BF | 4.36:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #5977BF | 4.81:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #5977BF text on white | 4.36:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #5977BF text on black | 4.81:1 | AA | Lc -31.6 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B1C1E3
oklch(81% 0.051 265.3)
-
Step 400
400
#88A0D6
oklch(70.8% 0.084 265.8)
-
Step 500
500
#6A87CB
oklch(63% 0.108 265.8)
-
Step 600
600 (this color)
#5977BF
oklch(57.9% 0.117 265.8)
-
Step 700
700
#435E9E
oklch(49.2% 0.108 265.4)
-
Step 800
800
#374D80
oklch(42.8% 0.089 265.2)
-
Step 900
900
#304067
oklch(37.7% 0.07 266.2)
-
Step 950
950
#1C263C
oklch(27.1% 0.044 265)
#5977BF with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5A7EC2 | 0.019 |
| Deuteranopia (no green cones) | #4E75BD | 0.015 |
| Tritanopia (no blue cones) | #258792 | 0.105 |
| Achromatopsia (no color) | #797979 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5977BF
#5977BF
oklch(57.9% 0.117 265.8)
- #997408
#997408
oklch(58% 0.117 85.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #5977BF, closest first.
No curated palette has a color within ΔE 0.04 of #5977BF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.033
- Cool Blue #4984B8 ΔE 0.042
- Steel Blue #4682B4 ΔE 0.042
- Flat Blue #3C73A8 ΔE 0.050
- Off Blue #5684AE ΔE 0.050
- French Blue #436BAD ΔE 0.051
- Dusty Blue #5A86AD ΔE 0.057
- Dull Blue #49759C ΔE 0.059
Use #5977BF in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.