#275666
Closest named color: Petrol (#005F6A). oklch(42.7% 0.057 223), rgb(39, 86, 102).
Aa
White text reads best on this color (8.04:1).
About this color
#275666 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.057 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.030 away. White text reads best on it, at 8.04:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.60:1 |
| White text | 8.04:1 |
Values
| HEX | #275666 |
| RGB | rgb(39, 86, 102) |
| HSL | hsl(195, 45%, 28%) |
| OKLCH | oklch(42.7% 0.057 223) |
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 #275666 | 8.04:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #275666 | 2.60:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #275666 text on white | 8.04:1 | AAA | Lc 87.7 | Fine for body text |
| #275666 text on black | 2.60:1 | Fails | Lc -14.4 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#AAC6D1
oklch(80.9% 0.034 223.5)
-
Step 400
400
#7CA9B9
oklch(70.8% 0.054 221.9)
-
Step 500
500
#5993A8
oklch(63.2% 0.068 223.2)
-
Step 600
600
#3C7D93
oklch(55.6% 0.074 222.8)
-
Step 700
700
#2D697D
oklch(49% 0.069 222.9)
-
Step 800
800 (this color)
#275666
oklch(42.7% 0.057 223)
-
Step 900
900
#254753
oklch(37.7% 0.045 223)
-
Step 950
950
#162A31
oklch(27.1% 0.029 222.4)
#275666 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) | #4D5467 | 0.046 |
| Deuteranopia (no green cones) | #444D66 | 0.042 |
| Tritanopia (no blue cones) | #005B5B | 0.035 |
| Achromatopsia (no color) | #505050 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #275666
#275666
oklch(42.7% 0.057 223)
- #6A4535
#6A4535
oklch(42.8% 0.057 44.2)
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 #275666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.030
- Deep Teal #00555A ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.038
- YInMn Blue #415A77 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.052
- Charcoal #264653 ΔE 0.054
- Dark Teal #014D4E ΔE 0.055
Use #275666 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.