#42828A
Closest named color: Dark Cyan (#008B8B). oklch(56.7% 0.067 206.1), rgb(66, 130, 138).
Aa
Black text reads best on this color (4.79:1).
About this color
#42828A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 57%, its chroma 0.067 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.037 away. Black text reads best on it, at 4.79:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.79:1 |
| White text | 4.38:1 |
Values
| HEX | #42828A |
| RGB | rgb(66, 130, 138) |
| HSL | hsl(187, 35%, 40%) |
| OKLCH | oklch(56.7% 0.067 206.1) |
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 #42828A | 4.38:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #42828A | 4.79:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #42828A text on white | 4.38:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #42828A text on black | 4.79:1 | AA | Lc -31.4 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E4ECED
oklch(93.7% 0.009 205.9)
-
Step 200
200
#CDDCDE
oklch(88.4% 0.016 206.4)
-
Step 300
300
#ABC7CA
oklch(81% 0.03 204.5)
-
Step 400
400
#7EAAAF
oklch(70.8% 0.048 204.9)
-
Step 500
500
#5B949C
oklch(63% 0.061 207.1)
-
Step 600
600 (this color)
#42828A
oklch(56.7% 0.067 206.1)
-
Step 700
700
#306B72
oklch(49.2% 0.062 205.8)
-
Step 800
800
#29575D
oklch(42.7% 0.051 206.6)
-
Step 900
900
#26484C
oklch(37.8% 0.04 205.4)
-
Step 950
950
#172A2D
oklch(27% 0.025 208.4)
#42828A 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) | #797E8B | 0.065 |
| Deuteranopia (no green cones) | #6D758A | 0.059 |
| Tritanopia (no blue cones) | #128784 | 0.033 |
| Achromatopsia (no color) | #797979 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42828A
#42828A
oklch(56.7% 0.067 206.1)
- #9A6762
#9A6762
oklch(56.6% 0.067 25.6)
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 #42828A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.037
- Teal Blue #01889F ΔE 0.039
- Teal #008080 ΔE 0.039
- Grey Blue #647D8E ΔE 0.040
- Cerulean #457B9D ΔE 0.042
- Stormy Blue #507B9C ΔE 0.043
- Ocean #017B92 ΔE 0.044
- Battleship Grey #6B7C85 ΔE 0.046
Use #42828A 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.