#5B7B97
Closest named color: Stormy Blue (#507B9C). oklch(56.9% 0.057 245.4), rgb(91, 123, 151).
Aa
Black text reads best on this color (4.72:1).
About this color
#5B7B97 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.057 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.014 away. Black text reads best on it, at 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #5B7B97 |
| RGB | rgb(91, 123, 151) |
| HSL | hsl(208, 25%, 47%) |
| OKLCH | oklch(56.9% 0.057 245.4) |
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 #5B7B97 | 4.44:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #5B7B97 | 4.72:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #5B7B97 text on white | 4.44:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #5B7B97 text on black | 4.72:1 | AA | Lc -30.9 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B4C3D0
oklch(81% 0.025 244.2)
-
Step 400
400
#8CA4B9
oklch(70.7% 0.041 244.8)
-
Step 500
500
#6F8DA8
oklch(63% 0.053 245.9)
-
Step 600
600 (this color)
#5B7B97
oklch(56.9% 0.057 245.4)
-
Step 700
700
#47647D
oklch(49.1% 0.053 245.2)
-
Step 800
800
#3B5266
oklch(42.8% 0.044 245.3)
-
Step 900
900
#324453
oklch(37.8% 0.035 244)
-
Step 950
950
#1E2830
oklch(27.1% 0.02 242.7)
#5B7B97 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) | #707B98 | 0.028 |
| Deuteranopia (no green cones) | #687596 | 0.022 |
| Tritanopia (no blue cones) | #468284 | 0.048 |
| Achromatopsia (no color) | #787878 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B7B97
#5B7B97
oklch(56.9% 0.057 245.4)
- #8F7153
#8F7153
oklch(57% 0.057 66.2)
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 #5B7B97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.014
- Grey Blue #647D8E ΔE 0.020
- Cerulean #457B9D ΔE 0.025
- Metallic Blue #4F738E ΔE 0.030
- Dull Blue #49759C ΔE 0.031
- Battleship Grey #6B7C85 ΔE 0.034
- Slate Gray #708090 ΔE 0.035
- Off Blue #5684AE ΔE 0.038
Use #5B7B97 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.