#37484C
Closest named color: Dark Slate Gray (#2F4F4F). oklch(38.9% 0.023 213.7), rgb(55, 72, 76).
Aa
White text reads best on this color (9.57:1).
About this color
#37484C is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.023 away. White text reads best on it, at 9.57:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #37484C |
| RGB | rgb(55, 72, 76) |
| HSL | hsl(191, 16%, 26%) |
| OKLCH | oklch(38.9% 0.023 213.7) |
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 #37484C | 9.57:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #37484C | 2.19:1 | Fails | Lc 11.8 | Not readable |
| #37484C text on white | 9.57:1 | AAA | Lc 92.2 | Preferred for body text |
| #37484C text on black | 2.19:1 | Fails | Lc -10.2 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDD
oklch(88.5% 0.01 212.5)
-
Step 300
300
#B5C4C7
oklch(81% 0.017 211)
-
Step 400
400
#8EA5AB
oklch(70.6% 0.027 215.2)
-
Step 500
500
#728F96
oklch(63% 0.034 214.1)
-
Step 600
600
#5A7981
oklch(55.5% 0.038 215.4)
-
Step 700
700
#4A666D
oklch(49.1% 0.035 214.9)
-
Step 800
800
#3D5359
oklch(42.6% 0.029 216.4)
-
Step 900
900 (this color)
#37484C
oklch(38.9% 0.023 213.7)
-
Step 950
950
#1F282B
oklch(26.9% 0.014 220.1)
#37484C 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) | #45474C | 0.021 |
| Deuteranopia (no green cones) | #41444C | 0.019 |
| Tritanopia (no blue cones) | #304A49 | 0.013 |
| Achromatopsia (no color) | #454545 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37484C
#37484C
oklch(38.9% 0.023 213.7)
- #50413D
#50413D
oklch(39% 0.022 35.4)
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 #37484C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.023
- Charcoal Grey #3C4142 ΔE 0.024
- Charcoal #264653 ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.033
- Dark Teal #014D4E ΔE 0.044
- Onyx #343A40 ΔE 0.046
- Deep Teal #00555A ΔE 0.052
- Dark Blue Green #005249 ΔE 0.053
Use #37484C 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.