#5B7FA1
Closest named color: Stormy Blue (#507B9C). oklch(58.3% 0.066 247.6), rgb(91, 127, 161).
Aa
Black text reads best on this color (4.99:1).
About this color
#5B7FA1 is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.066 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.019 away. Black text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.99:1 |
| White text | 4.20:1 |
Values
| HEX | #5B7FA1 |
| RGB | rgb(91, 127, 161) |
| HSL | hsl(209, 28%, 49%) |
| OKLCH | oklch(58.3% 0.066 247.6) |
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 #5B7FA1 | 4.20:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #5B7FA1 | 4.99:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #5B7FA1 text on white | 4.20:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #5B7FA1 text on black | 4.99:1 | AA | Lc -32.7 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EAEF
oklch(93.5% 0.009 247.9)
-
Step 200
200
#D1DAE4
oklch(88.4% 0.017 250.9)
-
Step 300
300
#B2C3D3
oklch(80.9% 0.029 246.5)
-
Step 400
400
#89A4BD
oklch(70.7% 0.047 246.5)
-
Step 500
500
#6C8DAD
oklch(63.1% 0.061 248)
-
Step 600
600 (this color)
#5B7FA1
oklch(58.3% 0.066 247.6)
-
Step 700
700
#446482
oklch(49.1% 0.061 247.6)
-
Step 800
800
#38526A
oklch(42.8% 0.051 247.1)
-
Step 900
900
#304456
oklch(37.8% 0.04 246.3)
-
Step 950
950
#1D2832
oklch(27.1% 0.024 246.3)
#5B7FA1 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) | #7180A3 | 0.029 |
| Deuteranopia (no green cones) | #6878A0 | 0.024 |
| Tritanopia (no blue cones) | #40878A | 0.057 |
| Achromatopsia (no color) | #7B7B7B | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B7FA1
#5B7FA1
oklch(58.3% 0.066 247.6)
- #967450
#967450
oklch(58.4% 0.066 67.5)
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 #5B7FA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.019
- Off Blue #5684AE ΔE 0.021
- Dusty Blue #5A86AD ΔE 0.023
- Cerulean #457B9D ΔE 0.029
- Grey Blue #647D8E ΔE 0.029
- Steel Blue #4682B4 ΔE 0.033
- Slate Gray #708090 ΔE 0.037
- Cool Blue #4984B8 ΔE 0.037
Use #5B7FA1 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.