#587491
Closest named color: Metallic Blue (#4F738E). oklch(54.9% 0.056 249.8), rgb(88, 116, 145).
Aa
White text reads best on this color (4.85:1).
About this color
#587491 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.056 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.013 away. White text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #587491 |
| RGB | rgb(88, 116, 145) |
| HSL | hsl(211, 24%, 46%) |
| OKLCH | oklch(54.9% 0.056 249.8) |
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 #587491 | 4.85:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #587491 | 4.32:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #587491 text on white | 4.85:1 | AA | Lc 73.7 | Content text, not long reading |
| #587491 text on black | 4.32:1 | AA large text | Lc -28.0 | 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
#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
#B5C2D1
oklch(80.9% 0.026 251.9)
-
Step 400
400
#8EA3B9
oklch(70.7% 0.04 249.6)
-
Step 500
500
#728CA8
oklch(63% 0.052 250.5)
-
Step 600
600 (this color)
#587491
oklch(54.9% 0.056 249.8)
-
Step 700
700
#4A637D
oklch(49% 0.052 249.9)
-
Step 800
800
#3D5166
oklch(42.7% 0.043 250.1)
-
Step 900
900
#344353
oklch(37.7% 0.034 250.4)
-
Step 950
950
#1F2731
oklch(27% 0.022 254.2)
#587491 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) | #697592 | 0.023 |
| Deuteranopia (no green cones) | #626F90 | 0.018 |
| Tritanopia (no blue cones) | #447B7E | 0.048 |
| Achromatopsia (no color) | #717171 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #587491
#587491
oklch(54.9% 0.056 249.8)
- #876C4D
#876C4D
oklch(55% 0.056 70.1)
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 #587491, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.013
- Dull Blue #49759C ΔE 0.023
- Stormy Blue #507B9C ΔE 0.023
- Cerulean #457B9D ΔE 0.028
- Grey Blue #647D8E ΔE 0.034
- Muted Blue #3B719F ΔE 0.040
- Battleship Gray #6C757D ΔE 0.041
- Battleship Grey #6B7C85 ΔE 0.043
Use #587491 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.