#375863
Closest named color: YInMn Blue (#415A77). oklch(44% 0.042 221), rgb(55, 88, 99).
Aa
White text reads best on this color (7.66:1).
About this color
#375863 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.042 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.036 away. White text reads best on it, at 7.66:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.73:1 |
| White text | 7.66:1 |
Values
| HEX | #375863 |
| RGB | rgb(55, 88, 99) |
| HSL | hsl(195, 29%, 30%) |
| OKLCH | oklch(44% 0.042 221) |
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 #375863 | 7.66:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #375863 | 2.73:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #375863 text on white | 7.66:1 | AAA | Lc 86.6 | Fine for body text |
| #375863 text on black | 2.73:1 | Fails | Lc -15.5 | Dividers and decoration only |
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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D0DBE0
oklch(88.5% 0.014 226.6)
-
Step 300
300
#B0C5CC
oklch(81% 0.025 219.8)
-
Step 400
400
#86A7B2
oklch(70.7% 0.04 220.1)
-
Step 500
500
#67919F
oklch(63.1% 0.05 220.6)
-
Step 600
600
#4D7B8A
oklch(55.6% 0.055 220.6)
-
Step 700
700
#3E6875
oklch(49.2% 0.051 219.7)
-
Step 800
800 (this color)
#375863
oklch(44% 0.042 221)
-
Step 900
900
#2D464E
oklch(37.7% 0.034 219.9)
-
Step 950
950
#1B292E
oklch(27% 0.021 222)
#375863 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) | #515664 | 0.035 |
| Deuteranopia (no green cones) | #4B5163 | 0.033 |
| Tritanopia (no blue cones) | #255C5B | 0.028 |
| Achromatopsia (no color) | #535353 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375863
#375863
oklch(44% 0.042 221)
- #674B40
#674B40
oklch(44% 0.042 42.4)
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 #375863, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.036
- Petrol #005F6A ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.041
- Deep Teal #00555A ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.050
- Dusty Grape #545775 ΔE 0.052
- Dark Aqua #05696B ΔE 0.055
- Slate #516572 ΔE 0.058
Use #375863 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.