#587F9A
Closest named color: Stormy Blue (#507B9C). oklch(57.8% 0.06 239.4), rgb(88, 127, 154).
Aa
Black text reads best on this color (4.91:1).
About this color
#587F9A is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.060 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.017 away. Black text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #587F9A |
| RGB | rgb(88, 127, 154) |
| HSL | hsl(205, 27%, 47%) |
| OKLCH | oklch(57.8% 0.06 239.4) |
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 #587F9A | 4.27:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #587F9A | 4.91:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #587F9A text on white | 4.27:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #587F9A text on black | 4.91:1 | AA | Lc -32.2 | 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
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B1C3D1
oklch(80.8% 0.028 241.2)
-
Step 400
400
#88A5B9
oklch(70.7% 0.044 238.4)
-
Step 500
500
#6A8FA8
oklch(63.2% 0.056 238.3)
-
Step 600
600 (this color)
#587F9A
oklch(57.8% 0.06 239.4)
-
Step 700
700
#42657D
oklch(49% 0.056 239.4)
-
Step 800
800
#375366
oklch(42.8% 0.046 238.9)
-
Step 900
900
#304453
oklch(37.6% 0.036 241.3)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#587F9A 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) | #737E9B | 0.034 |
| Deuteranopia (no green cones) | #6A779A | 0.030 |
| Tritanopia (no blue cones) | #3E8688 | 0.048 |
| Achromatopsia (no color) | #7A7A7A | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #587F9A
#587F9A
oklch(57.8% 0.06 239.4)
- #957156
#957156
oklch(57.8% 0.06 58.1)
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 #587F9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.017
- Grey Blue #647D8E ΔE 0.021
- Cerulean #457B9D ΔE 0.026
- Off Blue #5684AE ΔE 0.031
- Dusty Blue #5A86AD ΔE 0.032
- Slate Gray #708090 ΔE 0.033
- Battleship Grey #6B7C85 ΔE 0.036
- Dull Blue #49759C ΔE 0.037
Use #587F9A 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.