#224D55
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.3% 0.049 211.3), rgb(34, 77, 85).
Aa
White text reads best on this color (9.28:1).
About this color
#224D55 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.049 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.019 away. White text reads best on it, at 9.28:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.26:1 |
| White text | 9.28:1 |
Values
| HEX | #224D55 |
| RGB | rgb(34, 77, 85) |
| HSL | hsl(189, 43%, 23%) |
| OKLCH | oklch(39.3% 0.049 211.3) |
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 #224D55 | 9.28:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #224D55 | 2.26:1 | Fails | Lc 12.7 | Not readable |
| #224D55 text on white | 9.28:1 | AAA | Lc 91.3 | Preferred for body text |
| #224D55 text on black | 2.26:1 | Fails | Lc -11.1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE1
oklch(88.5% 0.02 212.6)
-
Step 300
300
#A6C8CE
oklch(81% 0.037 209.5)
-
Step 400
400
#75ABB6
oklch(70.7% 0.059 211.7)
-
Step 500
500
#4D96A4
oklch(63.2% 0.076 211.6)
-
Step 600
600
#2B808F
oklch(55.6% 0.082 211.6)
-
Step 700
700
#1C6C79
oklch(49.1% 0.076 210.9)
-
Step 800
800
#1B5863
oklch(42.7% 0.063 211.9)
-
Step 900
900 (this color)
#224D55
oklch(39.3% 0.049 211.3)
-
Step 950
950
#122B2F
oklch(27.1% 0.032 209)
#224D55 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) | #464A55 | 0.046 |
| Deuteranopia (no green cones) | #3F4555 | 0.042 |
| Tritanopia (no blue cones) | #00504F | 0.025 |
| Achromatopsia (no color) | #474747 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #224D55
#224D55
oklch(39.3% 0.049 211.3)
- #5E3C35
#5E3C35
oklch(39.4% 0.05 32.2)
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 #224D55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.019
- Charcoal #264653 ΔE 0.022
- Dark Teal #014D4E ΔE 0.024
- Deep Teal #00555A ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.028
- Dark Blue Green #005249 ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.048
- Petrol #005F6A ΔE 0.058
Use #224D55 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.