#587FA0
Closest named color: Stormy Blue (#507B9C). oklch(58.1% 0.067 244.8), rgb(88, 127, 160).
Aa
Black text reads best on this color (4.95:1).
About this color
#587FA0 is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.067 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.016 away. Black text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.95:1 |
| White text | 4.23:1 |
Values
| HEX | #587FA0 |
| RGB | rgb(88, 127, 160) |
| HSL | hsl(207, 29%, 49%) |
| OKLCH | oklch(58.1% 0.067 244.8) |
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 #587FA0 | 4.23:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #587FA0 | 4.95:1 | AA | Lc 34.9 | Non-text elements, placeholder text |
| #587FA0 text on white | 4.23:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #587FA0 text on black | 4.95:1 | AA | Lc -32.5 | 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
#D0DBE4
oklch(88.6% 0.017 242.5)
-
Step 300
300
#B1C3D3
oklch(80.9% 0.03 245)
-
Step 400
400
#88A4BD
oklch(70.6% 0.048 245.5)
-
Step 500
500
#6A8EAD
oklch(63.2% 0.062 245)
-
Step 600
600 (this color)
#587FA0
oklch(58.1% 0.067 244.8)
-
Step 700
700
#416582
oklch(49.2% 0.062 243.8)
-
Step 800
800
#36526A
oklch(42.7% 0.052 245.3)
-
Step 900
900
#2F4456
oklch(37.7% 0.041 245)
-
Step 950
950
#1C2832
oklch(27% 0.025 244)
#587FA0 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) | #717FA2 | 0.032 |
| Deuteranopia (no green cones) | #68789F | 0.026 |
| Tritanopia (no blue cones) | #3B878A | 0.056 |
| Achromatopsia (no color) | #7B7B7B | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #587FA0
#587FA0
oklch(58.1% 0.067 244.8)
- #97724F
#97724F
oklch(58% 0.068 64.2)
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 #587FA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.016
- Off Blue #5684AE ΔE 0.023
- Cerulean #457B9D ΔE 0.025
- Dusty Blue #5A86AD ΔE 0.025
- Grey Blue #647D8E ΔE 0.029
- Steel Blue #4682B4 ΔE 0.033
- Dull Blue #49759C ΔE 0.036
- Cool Blue #4984B8 ΔE 0.037
Use #587FA0 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.