#024557
Closest named color: Charcoal (#264653). oklch(36.3% 0.066 222.8), rgb(2, 69, 87).
Aa
White text reads best on this color (10.54:1).
About this color
#024557 is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.066 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.026 away. White text reads best on it, at 10.54:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.99:1 |
| White text | 10.54:1 |
Values
| HEX | #024557 |
| RGB | rgb(2, 69, 87) |
| HSL | hsl(193, 96%, 17%) |
| OKLCH | oklch(36.3% 0.066 222.8) |
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 #024557 | 10.54:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #024557 | 1.99:1 | Fails | Lc 9.9 | Not readable |
| #024557 text on white | 10.54:1 | AAA | Lc 94.0 | Preferred for body text |
| #024557 text on black | 1.99:1 | Fails | Lc -8.5 | Not readable |
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 900.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C6DEE7
oklch(88.6% 0.028 222.3)
-
Step 300
300
#9EC8D8
oklch(80.8% 0.05 223.1)
-
Step 400
400
#65ACC5
oklch(70.7% 0.08 222.8)
-
Step 500
500
#3197B6
oklch(63.2% 0.102 222.4)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900 (this color)
#024557
oklch(36.3% 0.066 222.8)
-
Step 950
950
#0A2B35
oklch(27% 0.042 221.8)
#024557 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) | #3B4358 | 0.053 |
| Deuteranopia (no green cones) | #303C57 | 0.045 |
| Tritanopia (no blue cones) | #004A4B | 0.031 |
| Achromatopsia (no color) | #3F3F3F | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #024557
#024557
oklch(36.3% 0.066 222.8)
- #5B3120
#5B3120
oklch(36.3% 0.067 42.4)
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 #024557, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.031
- Midnight Green #073B4C ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.035
- Dark Teal #014D4E ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.053
- Deep Teal #00555A ΔE 0.053
- Dark Slate Gray #2F4F4F ΔE 0.055
Use #024557 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.