#374153
Closest named color: Dark Grey Blue (#29465B). oklch(37.4% 0.034 262.1), rgb(55, 65, 83).
Aa
White text reads best on this color (10.27:1).
About this color
#374153 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.034 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 10.27:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.04:1 |
| White text | 10.27:1 |
Values
| HEX | #374153 |
| RGB | rgb(55, 65, 83) |
| HSL | hsl(219, 20%, 27%) |
| OKLCH | oklch(37.4% 0.034 262.1) |
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 #374153 | 10.27:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #374153 | 2.04:1 | Fails | Lc 10.1 | Not readable |
| #374153 text on white | 10.27:1 | AAA | Lc 93.9 | Preferred for body text |
| #374153 text on black | 2.04:1 | Fails | Lc -8.7 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E3
oklch(88.4% 0.015 264.5)
-
Step 300
300
#B8C1D1
oklch(80.9% 0.025 262.1)
-
Step 400
400
#93A1BB
oklch(70.7% 0.041 262.8)
-
Step 500
500
#788AA9
oklch(63% 0.051 261.2)
-
Step 600
600
#617495
oklch(55.6% 0.056 261.3)
-
Step 700
700
#50617F
oklch(49.1% 0.053 261.6)
-
Step 800
800
#424F67
oklch(42.6% 0.043 262.5)
-
Step 900
900 (this color)
#374153
oklch(37.4% 0.034 262.1)
-
Step 950
950
#212731
oklch(27.1% 0.021 260.6)
#374153 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) | #3B4254 | 0.007 |
| Deuteranopia (no green cones) | #383F53 | 0.006 |
| Tritanopia (no blue cones) | #2F4547 | 0.031 |
| Achromatopsia (no color) | #414141 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374153
#374153
oklch(37.4% 0.034 262.1)
- #4A3F2C
#4A3F2C
oklch(37.4% 0.034 81)
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 #374153, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.026
- Charcoal Grey #3C4142 ΔE 0.030
- Onyx #343A40 ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.041
- Dark Slate Gray #2F4F4F ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.058
- Midnight Green #073B4C ΔE 0.058
Use #374153 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.