#5F78AA
Closest named color: Stormy Blue (#507B9C). oklch(57.4% 0.083 263.6), rgb(95, 120, 170).
Aa
Black text reads best on this color (4.75:1).
About this color
#5F78AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.083 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.032 away. Black text reads best on it, at 4.75:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #5F78AA |
| RGB | rgb(95, 120, 170) |
| HSL | hsl(220, 31%, 52%) |
| OKLCH | oklch(57.4% 0.083 263.6) |
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 #5F78AA | 4.41:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #5F78AA | 4.75:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #5F78AA text on white | 4.41:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #5F78AA text on black | 4.75:1 | AA | Lc -31.1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E7
oklch(88.4% 0.021 264.5)
-
Step 300
300
#B4C1DA
oklch(80.9% 0.038 263.6)
-
Step 400
400
#8DA1C7
oklch(70.7% 0.06 263.1)
-
Step 500
500
#7289B8
oklch(63% 0.076 264.2)
-
Step 600
600 (this color)
#5F78AA
oklch(57.4% 0.083 263.6)
-
Step 700
700
#4A608D
oklch(49.1% 0.077 263.8)
-
Step 800
800
#3D4F72
oklch(42.8% 0.063 263.1)
-
Step 900
900
#34415C
oklch(37.6% 0.05 264.3)
-
Step 950
950
#1E2636
oklch(26.9% 0.032 263.8)
#5F78AA 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) | #667CAC | 0.015 |
| Deuteranopia (no green cones) | #5E75A9 | 0.009 |
| Tritanopia (no blue cones) | #44838A | 0.074 |
| Achromatopsia (no color) | #787878 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F78AA
#5F78AA
oklch(57.4% 0.083 263.6)
- #90743B
#90743B
oklch(57.4% 0.083 83.5)
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 #5F78AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.032
- Off Blue #5684AE ΔE 0.033
- Steel Blue #4682B4 ΔE 0.035
- Dull Blue #49759C ΔE 0.036
- Cerulean #457B9D ΔE 0.039
- Cool Blue #4984B8 ΔE 0.039
- Dusty Blue #5A86AD ΔE 0.039
- Flat Blue #3C73A8 ΔE 0.043
Use #5F78AA 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.