#2E5564
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.7% 0.051 225), rgb(46, 85, 100).
Aa
White text reads best on this color (8.07:1).
About this color
#2E5564 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.051 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.035 away. White text reads best on it, at 8.07:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.59:1 |
| White text | 8.07:1 |
Values
| HEX | #2E5564 |
| RGB | rgb(46, 85, 100) |
| HSL | hsl(197, 37%, 29%) |
| OKLCH | oklch(42.7% 0.051 225) |
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 #2E5564 | 8.07:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #2E5564 | 2.59:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #2E5564 text on white | 8.07:1 | AAA | Lc 87.9 | Fine for body text |
| #2E5564 text on black | 2.59:1 | Fails | Lc -14.3 | 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 800.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE1
oklch(88.5% 0.017 221.1)
-
Step 300
300
#ADC5CF
oklch(80.9% 0.03 224.8)
-
Step 400
400
#81A7B7
oklch(70.6% 0.047 225.6)
-
Step 500
500
#6092A5
oklch(63.2% 0.061 223.9)
-
Step 600
600
#467C90
oklch(55.7% 0.065 224.1)
-
Step 700
700
#37687B
oklch(49.1% 0.061 225.4)
-
Step 800
800 (this color)
#2E5564
oklch(42.7% 0.051 225)
-
Step 900
900
#294651
oklch(37.6% 0.04 224.2)
-
Step 950
950
#192930
oklch(27% 0.025 227.2)
#2E5564 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) | #4D5365 | 0.040 |
| Deuteranopia (no green cones) | #454D64 | 0.036 |
| Tritanopia (no blue cones) | #0E5A5A | 0.035 |
| Achromatopsia (no color) | #505050 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2E5564
#2E5564
oklch(42.7% 0.051 225)
- #674638
#674638
oklch(42.7% 0.051 43.9)
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 #2E5564, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.035
- Deep Teal #00555A ΔE 0.035
- Petrol #005F6A ΔE 0.036
- YInMn Blue #415A77 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.048
- Charcoal #264653 ΔE 0.052
- Dark Teal #014D4E ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.056
Use #2E5564 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.