#5B7EB7
Closest named color: Cool Blue (#4984B8). oklch(59.1% 0.097 259.8), rgb(91, 126, 183).
Aa
Black text reads best on this color (5.11:1).
About this color
#5B7EB7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.097 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.023 away. Black text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #5B7EB7 |
| RGB | rgb(91, 126, 183) |
| HSL | hsl(217, 39%, 54%) |
| OKLCH | oklch(59.1% 0.097 259.8) |
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 #5B7EB7 | 4.10:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #5B7EB7 | 5.11:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #5B7EB7 text on white | 4.10:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #5B7EB7 text on black | 5.11:1 | AA | Lc -33.6 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAEA
oklch(88.6% 0.025 259.8)
-
Step 300
300
#B0C2DD
oklch(80.9% 0.043 258.4)
-
Step 400
400
#87A2CC
oklch(70.7% 0.069 259.1)
-
Step 500
500
#698ABF
oklch(63% 0.089 259.6)
-
Step 600
600 (this color)
#5B7EB7
oklch(59.1% 0.097 259.8)
-
Step 700
700
#426193
oklch(49.2% 0.089 259.6)
-
Step 800
800
#364F78
oklch(42.7% 0.075 259.9)
-
Step 900
900
#2F4260
oklch(37.7% 0.057 259.3)
-
Step 950
950
#1C2738
oklch(27.1% 0.035 258.9)
#5B7EB7 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) | #6882B9 | 0.021 |
| Deuteranopia (no green cones) | #5D79B6 | 0.014 |
| Tritanopia (no blue cones) | #318A92 | 0.086 |
| Achromatopsia (no color) | #7D7D7D | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B7EB7
#5B7EB7
oklch(59.1% 0.097 259.8)
- #9C7733
#9C7733
oklch(59.2% 0.097 80.1)
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 #5B7EB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.023
- Steel Blue #4682B4 ΔE 0.024
- Off Blue #5684AE ΔE 0.025
- Dusty Blue #5A86AD ΔE 0.031
- Faded Blue #658CBB ΔE 0.042
- Windows Blue #3778BF ΔE 0.044
- Stormy Blue #507B9C ΔE 0.045
- Cerulean #457B9D ΔE 0.049
Use #5B7EB7 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.