#304353
Closest named color: Charcoal (#264653). oklch(37.4% 0.037 244.4), rgb(48, 67, 83).
Aa
White text reads best on this color (10.22:1).
About this color
#304353 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.037 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.015 away. White text reads best on it, at 10.22:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.05:1 |
| White text | 10.22:1 |
Values
| HEX | #304353 |
| RGB | rgb(48, 67, 83) |
| HSL | hsl(207, 27%, 26%) |
| OKLCH | oklch(37.4% 0.037 244.4) |
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 #304353 | 10.22:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #304353 | 2.05:1 | Fails | Lc 10.2 | Not readable |
| #304353 text on white | 10.22:1 | AAA | Lc 93.7 | Preferred for body text |
| #304353 text on black | 2.05:1 | Fails | Lc -8.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D1DAE3
oklch(88.4% 0.016 248)
-
Step 300
300
#B2C3D2
oklch(80.9% 0.028 244.8)
-
Step 400
400
#8AA4BB
oklch(70.7% 0.045 245.2)
-
Step 500
500
#6D8EAA
oklch(63.2% 0.056 244.5)
-
Step 600
600
#547795
oklch(55.5% 0.062 245.1)
-
Step 700
700
#44647F
oklch(49% 0.057 244.8)
-
Step 800
800
#395267
oklch(42.7% 0.046 244.5)
-
Step 900
900 (this color)
#304353
oklch(37.4% 0.037 244.4)
-
Step 950
950
#1D2831
oklch(27.1% 0.023 243.4)
#304353 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) | #3C4354 | 0.018 |
| Deuteranopia (no green cones) | #383F53 | 0.016 |
| Tritanopia (no blue cones) | #244748 | 0.031 |
| Achromatopsia (no color) | #414141 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304353
#304353
oklch(37.4% 0.037 244.4)
- #4F3D2C
#4F3D2C
oklch(37.5% 0.037 64.7)
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 #304353, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.015
- Dark Grey Blue #29465B ΔE 0.016
- Charcoal Grey #3C4142 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.037
- Onyx #343A40 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.042
- Dark Teal #014D4E ΔE 0.049
- Midnight Green #073B4C ΔE 0.052
Use #304353 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.