#373754
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35% 0.05 283.5), rgb(55, 55, 84).
Aa
White text reads best on this color (11.43:1).
About this color
#373754 is a dark, muted purple. In OKLCH its lightness is 35%, its chroma 0.050 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.039 away. White text reads best on it, at 11.43:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.83:1 |
| White text | 11.43:1 |
Values
| HEX | #373754 |
| RGB | rgb(55, 55, 84) |
| HSL | hsl(240, 21%, 27%) |
| OKLCH | oklch(35% 0.05 283.5) |
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 #373754 | 11.43:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #373754 | 1.83:1 | Fails | Lc 7.6 | Not readable |
| #373754 text on white | 11.43:1 | AAA | Lc 96.3 | Preferred for body text |
| #373754 text on black | 1.83:1 | Fails | Lc 0.0 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F1
oklch(93.6% 0.011 286.2)
-
Step 200
200
#D7D8E7
oklch(88.6% 0.02 282.9)
-
Step 300
300
#BDBED9
oklch(80.9% 0.038 283.8)
-
Step 400
400
#9B9CC6
oklch(70.7% 0.061 283.7)
-
Step 500
500
#8384B7
oklch(63.2% 0.076 283.1)
-
Step 600
600
#6D6DA3
oklch(55.7% 0.083 283.4)
-
Step 700
700
#5B5B8C
oklch(49.2% 0.078 283.2)
-
Step 800
800
#4A4A71
oklch(42.6% 0.064 283.3)
-
Step 900
900 (this color)
#373754
oklch(35% 0.05 283.5)
-
Step 950
950
#242436
oklch(26.9% 0.033 283.9)
#373754 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) | #2E3B55 | 0.017 |
| Deuteranopia (no green cones) | #2D3953 | 0.017 |
| Tritanopia (no blue cones) | #303C41 | 0.044 |
| Achromatopsia (no color) | #3A3A3A | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373754
#373754
oklch(35% 0.05 283.5)
- #3F3C1B
#3F3C1B
oklch(35.1% 0.051 104)
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 #373754, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.039
- Onyx #343A40 ΔE 0.040
- Gunmetal #293241 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.047
- Charcoal #264653 ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.053
Use #373754 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.