#374A50
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.5% 0.026 219.2), rgb(55, 74, 80).
Aa
White text reads best on this color (9.30:1).
About this color
#374A50 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.019 away. White text reads best on it, at 9.30:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #374A50 |
| RGB | rgb(55, 74, 80) |
| HSL | hsl(194, 19%, 26%) |
| OKLCH | oklch(39.5% 0.026 219.2) |
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 #374A50 | 9.30:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #374A50 | 2.25:1 | Fails | Lc 12.5 | Not readable |
| #374A50 text on white | 9.30:1 | AAA | Lc 91.5 | Preferred for body text |
| #374A50 text on black | 2.25:1 | Fails | Lc -10.9 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDE
oklch(88.5% 0.011 219.6)
-
Step 300
300
#B4C4C9
oklch(81% 0.019 218.4)
-
Step 400
400
#8CA6AE
oklch(70.8% 0.031 218.3)
-
Step 500
500
#6F909A
oklch(63.2% 0.04 218.3)
-
Step 600
600
#577A85
oklch(55.7% 0.043 219.3)
-
Step 700
700
#476670
oklch(49% 0.039 219.9)
-
Step 800
800
#3A545B
oklch(42.8% 0.033 216.3)
-
Step 900
900 (this color)
#374A50
oklch(39.5% 0.026 219.2)
-
Step 950
950
#1E282C
oklch(26.9% 0.016 224.2)
#374A50 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) | #464950 | 0.022 |
| Deuteranopia (no green cones) | #424650 | 0.020 |
| Tritanopia (no blue cones) | #2F4C4C | 0.015 |
| Achromatopsia (no color) | #474747 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374A50
#374A50
oklch(39.5% 0.026 219.2)
- #53423C
#53423C
oklch(39.5% 0.026 40.4)
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 #374A50, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.019
- Charcoal #264653 ΔE 0.027
- Charcoal Grey #3C4142 ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.032
- Dark Teal #014D4E ΔE 0.044
- Deep Teal #00555A ΔE 0.048
- Dark Blue Green #005249 ΔE 0.052
- Onyx #343A40 ΔE 0.053
Use #374A50 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.