#587587
Closest named color: Metallic Blue (#4F738E). oklch(54.7% 0.044 235.9), rgb(88, 117, 135).
Aa
White text reads best on this color (4.87:1).
About this color
#587587 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.044 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.018 away. White text reads best on it, at 4.87:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.30:1 |
| White text | 4.87:1 |
Values
| HEX | #587587 |
| RGB | rgb(88, 117, 135) |
| HSL | hsl(203, 21%, 44%) |
| OKLCH | oklch(54.7% 0.044 235.9) |
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 #587587 | 4.87:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #587587 | 4.30:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #587587 text on white | 4.87:1 | AA | Lc 73.8 | Content text, not long reading |
| #587587 text on black | 4.30:1 | AA large text | Lc -27.9 | Dividers and decoration only |
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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAED
oklch(93.5% 0.006 239.8)
-
Step 200
200
#D3DADF
oklch(88.4% 0.01 238.5)
-
Step 300
300
#B5C3CC
oklch(80.9% 0.02 235.8)
-
Step 400
400
#8FA4B2
oklch(70.7% 0.031 237.1)
-
Step 500
500
#738E9F
oklch(63.2% 0.04 235.9)
-
Step 600
600 (this color)
#587587
oklch(54.7% 0.044 235.9)
-
Step 700
700
#4A6575
oklch(49.2% 0.041 234.7)
-
Step 800
800
#3D525F
oklch(42.6% 0.034 235.8)
-
Step 900
900
#34444E
oklch(37.7% 0.027 235.9)
-
Step 950
950
#1F282E
oklch(27.1% 0.017 237.4)
#587587 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) | #6D7488 | 0.028 |
| Deuteranopia (no green cones) | #666F87 | 0.024 |
| Tritanopia (no blue cones) | #487A7B | 0.034 |
| Achromatopsia (no color) | #717171 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #587587
#587587
oklch(54.7% 0.044 235.9)
- #856A58
#856A58
oklch(54.6% 0.044 55.3)
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 #587587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.018
- Battleship Gray #6C757D ΔE 0.030
- Grey Blue #647D8E ΔE 0.030
- Stormy Blue #507B9C ΔE 0.033
- Battleship Grey #6B7C85 ΔE 0.035
- Dull Blue #49759C ΔE 0.036
- Cerulean #457B9D ΔE 0.037
- Slate Gray #708090 ΔE 0.048
Use #587587 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.