#42847B
Closest named color: Dark Cyan (#008B8B). oklch(56.7% 0.069 183.9), rgb(66, 132, 123).
Aa
Black text reads best on this color (4.81:1).
About this color
#42847B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 57%, its chroma 0.069 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.034 away. Black text reads best on it, at 4.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.81:1 |
| White text | 4.35:1 |
Values
| HEX | #42847B |
| RGB | rgb(66, 132, 123) |
| HSL | hsl(172, 33%, 39%) |
| OKLCH | oklch(56.7% 0.069 183.9) |
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 #42847B | 4.35:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #42847B | 4.81:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #42847B text on white | 4.35:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #42847B text on black | 4.81:1 | AA | Lc -31.6 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#ABC8C3
oklch(81% 0.032 184)
-
Step 400
400
#7EABA4
oklch(70.7% 0.049 184.3)
-
Step 500
500
#5B968E
oklch(63% 0.063 184.8)
-
Step 600
600 (this color)
#42847B
oklch(56.7% 0.069 183.9)
-
Step 700
700
#306D65
oklch(49.2% 0.065 184)
-
Step 800
800
#295952
oklch(42.8% 0.054 183)
-
Step 900
900
#264944
oklch(37.7% 0.042 183.9)
-
Step 950
950
#172B28
oklch(27.1% 0.027 183.8)
#42847B 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) | #7F7E7B | 0.074 |
| Deuteranopia (no green cones) | #74767C | 0.069 |
| Tritanopia (no blue cones) | #218681 | 0.021 |
| Achromatopsia (no color) | #797979 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42847B
#42847B
oklch(56.7% 0.069 183.9)
- #9A6572
#9A6572
oklch(56.7% 0.07 3.5)
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 #42847B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.034
- Teal #008080 ΔE 0.037
- Dusty Teal #4C9085 ΔE 0.038
- Bluegreen #017A79 ΔE 0.049
- Teal Green #0A9396 ΔE 0.051
- Slate Green #658D6D ΔE 0.054
- Deep Aqua #08787F ΔE 0.054
- Battleship Grey #6B7C85 ΔE 0.056
Use #42847B 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.