#374A45
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.1% 0.025 177), rgb(55, 74, 69).
Aa
White text reads best on this color (9.42:1).
About this color
#374A45 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.020 away. White text reads best on it, at 9.42:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.22:1 |
| White text | 9.42:1 |
Values
| HEX | #374A45 |
| RGB | rgb(55, 74, 69) |
| HSL | hsl(164, 15%, 25%) |
| OKLCH | oklch(39.1% 0.025 177) |
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 #374A45 | 9.42:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #374A45 | 2.22:1 | Fails | Lc 12.2 | Not readable |
| #374A45 text on white | 9.42:1 | AAA | Lc 91.8 | Preferred for body text |
| #374A45 text on black | 2.22:1 | Fails | Lc -10.6 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DBD9
oklch(88.4% 0.01 181.4)
-
Step 300
300
#B4C5C0
oklch(80.9% 0.02 176.3)
-
Step 400
400
#8DA7A0
oklch(70.6% 0.031 177.3)
-
Step 500
500
#719289
oklch(63.2% 0.039 176.5)
-
Step 600
600
#597C73
oklch(55.7% 0.042 177)
-
Step 700
700
#486860
oklch(49% 0.039 177.3)
-
Step 800
800
#3C554F
oklch(42.7% 0.032 178.2)
-
Step 900
900 (this color)
#374A45
oklch(39.1% 0.025 177)
-
Step 950
950
#1E2926
oklch(26.9% 0.016 176.5)
#374A45 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) | #484845 | 0.026 |
| Deuteranopia (no green cones) | #454545 | 0.025 |
| Tritanopia (no blue cones) | #324B48 | 0.007 |
| Achromatopsia (no color) | #464646 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374A45
#374A45
oklch(39.1% 0.025 177)
- #514045
#514045
oklch(39.1% 0.025 358.8)
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 #374A45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.020
- Charcoal Grey #3C4142 ΔE 0.029
- Charcoal #264653 ΔE 0.037
- Dark Teal #014D4E ΔE 0.043
- Dark Blue Green #005249 ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.047
- Deep Teal #00555A ΔE 0.051
- Onyx #343A40 ΔE 0.052
Use #374A45 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.