#274243
Closest named color: Charcoal (#264653). oklch(35.8% 0.033 198.8), rgb(39, 66, 67).
Aa
White text reads best on this color (10.78:1).
About this color
#274243 is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.033 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.027 away. White text reads best on it, at 10.78:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.94:1 |
| White text | 10.78:1 |
Values
| HEX | #274243 |
| RGB | rgb(39, 66, 67) |
| HSL | hsl(182, 26%, 21%) |
| OKLCH | oklch(35.8% 0.033 198.8) |
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 #274243 | 10.78:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #274243 | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #274243 text on white | 10.78:1 | AAA | Lc 94.9 | Preferred for body text |
| #274243 text on black | 1.94:1 | Fails | Lc -7.7 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDC
oklch(88.5% 0.014 196.9)
-
Step 300
300
#AFC6C6
oklch(80.9% 0.025 196.7)
-
Step 400
400
#84A9AA
oklch(70.8% 0.04 198.3)
-
Step 500
500
#659395
oklch(63.1% 0.05 199.4)
-
Step 600
600
#4A7D7F
oklch(55.5% 0.055 198.9)
-
Step 700
700
#3B6A6B
oklch(49.1% 0.051 197.4)
-
Step 800
800
#315658
oklch(42.6% 0.043 200.1)
-
Step 900
900 (this color)
#274243
oklch(35.8% 0.033 198.8)
-
Step 950
950
#1A2A2A
oklch(27.1% 0.021 196)
#274243 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) | #3F4043 | 0.035 |
| Deuteranopia (no green cones) | #393C43 | 0.031 |
| Tritanopia (no blue cones) | #1B4442 | 0.014 |
| Achromatopsia (no color) | #3D3D3D | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274243
#274243
oklch(35.8% 0.033 198.8)
- #4D3636
#4D3636
oklch(35.9% 0.033 18.8)
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 #274243, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.027
- Onyx #343A40 ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.036
- Dark Teal #014D4E ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.041
- Midnight Green #073B4C ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.045
Use #274243 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.