#5B7EBB
Closest named color: Cool Blue (#4984B8). oklch(59.3% 0.102 261), rgb(91, 126, 187).
Aa
Black text reads best on this color (5.14:1).
About this color
#5B7EBB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.102 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.025 away. Black text reads best on it, at 5.14:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.14:1 |
| White text | 4.08:1 |
Values
| HEX | #5B7EBB |
| RGB | rgb(91, 126, 187) |
| HSL | hsl(218, 41%, 55%) |
| OKLCH | oklch(59.3% 0.102 261) |
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 #5B7EBB | 4.08:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #5B7EBB | 5.14:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #5B7EBB text on white | 4.08:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #5B7EBB text on black | 5.14:1 | AA | Lc -33.8 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEB
oklch(88.6% 0.026 261.1)
-
Step 300
300
#B0C2DF
oklch(81% 0.046 259.9)
-
Step 400
400
#87A1CF
oklch(70.6% 0.074 261.7)
-
Step 500
500
#698AC2
oklch(63.2% 0.093 260.7)
-
Step 600
600 (this color)
#5B7EBB
oklch(59.3% 0.102 261)
-
Step 700
700
#416096
oklch(49.1% 0.095 260.9)
-
Step 800
800
#364F7A
oklch(42.8% 0.078 260.7)
-
Step 900
900
#2F4262
oklch(37.8% 0.06 260.5)
-
Step 950
950
#1C2739
oklch(27.1% 0.037 260)
#5B7EBB 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) | #6683BE | 0.021 |
| Deuteranopia (no green cones) | #5B7ABA | 0.011 |
| Tritanopia (no blue cones) | #2D8B94 | 0.091 |
| Achromatopsia (no color) | #7E7E7E | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B7EBB
#5B7EBB
oklch(59.3% 0.102 261)
- #9D772D
#9D772D
oklch(59.3% 0.102 80.9)
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 #5B7EBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.025
- Steel Blue #4682B4 ΔE 0.027
- Off Blue #5684AE ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.036
- Windows Blue #3778BF ΔE 0.042
- Faded Blue #658CBB ΔE 0.043
- Stormy Blue #507B9C ΔE 0.051
- Water Blue #0E87CC ΔE 0.054
Use #5B7EBB 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.