#274F45
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.5% 0.049 175.5), rgb(39, 79, 69).
Aa
White text reads best on this color (9.16:1).
About this color
#274F45 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.049 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.020 away. White text reads best on it, at 9.16:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.29:1 |
| White text | 9.16:1 |
Values
| HEX | #274F45 |
| RGB | rgb(39, 79, 69) |
| HSL | hsl(165, 34%, 23%) |
| OKLCH | oklch(39.5% 0.049 175.5) |
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 #274F45 | 9.16:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #274F45 | 2.29:1 | Fails | Lc 13.0 | Not readable |
| #274F45 text on white | 9.16:1 | AAA | Lc 91.0 | Preferred for body text |
| #274F45 text on black | 2.29:1 | Fails | Lc -11.3 | 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 900.
-
Step 50
50
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED8
oklch(88.5% 0.021 173.9)
-
Step 300
300
#A9C9BF
oklch(80.9% 0.037 174.5)
-
Step 400
400
#79AD9F
oklch(70.7% 0.059 175.9)
-
Step 500
500
#549887
oklch(63% 0.075 175.7)
-
Step 600
600
#368371
oklch(55.7% 0.081 175.4)
-
Step 700
700
#276F5F
oklch(49.2% 0.076 175.6)
-
Step 800
800
#225A4D
oklch(42.6% 0.063 175.4)
-
Step 900
900 (this color)
#274F45
oklch(39.5% 0.049 175.5)
-
Step 950
950
#152B26
oklch(26.9% 0.03 177.6)
#274F45 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) | #4C4B45 | 0.050 |
| Deuteranopia (no green cones) | #464646 | 0.049 |
| Tritanopia (no blue cones) | #17504C | 0.015 |
| Achromatopsia (no color) | #484848 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274F45
#274F45
oklch(39.5% 0.049 175.5)
- #5C3B47
#5C3B47
oklch(39.5% 0.05 356.2)
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 #274F45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.020
- Dark Blue Green #005249 ΔE 0.023
- Dark Teal #014D4E ΔE 0.029
- Deep Teal #00555A ΔE 0.037
- Charcoal #264653 ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.056
- Evergreen #05472A ΔE 0.057
Use #274F45 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.