#303453
Closest named color: Prussian Blue (#1D3557). oklch(33.6% 0.055 277.4), rgb(48, 52, 83).
Aa
White text reads best on this color (12.05:1).
About this color
#303453 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.055 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.026 away. White text reads best on it, at 12.05:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.74:1 |
| White text | 12.05:1 |
Values
| HEX | #303453 |
| RGB | rgb(48, 52, 83) |
| HSL | hsl(233, 27%, 26%) |
| OKLCH | oklch(33.6% 0.055 277.4) |
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 #303453 | 12.05:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #303453 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #303453 text on white | 12.05:1 | AAA | Lc 97.5 | Preferred for body text |
| #303453 text on black | 1.74:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E9
oklch(88.5% 0.023 277.9)
-
Step 300
300
#BABFDC
oklch(81% 0.041 277.7)
-
Step 400
400
#969DCA
oklch(70.7% 0.066 277.7)
-
Step 500
500
#7D85BC
oklch(63.2% 0.083 277.4)
-
Step 600
600
#666EA8
oklch(55.6% 0.09 277)
-
Step 700
700
#555C90
oklch(49.2% 0.084 277)
-
Step 800
800
#464B75
oklch(42.7% 0.07 277.8)
-
Step 900
900 (this color)
#303453
oklch(33.6% 0.055 277.4)
-
Step 950
950
#222537
oklch(27% 0.034 276.6)
#303453 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) | #2A3854 | 0.014 |
| Deuteranopia (no green cones) | #273552 | 0.014 |
| Tritanopia (no blue cones) | #263A3F | 0.049 |
| Achromatopsia (no color) | #363636 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #303453
#303453
oklch(33.6% 0.055 277.4)
- #3F3712
#3F3712
oklch(33.7% 0.055 97.1)
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 #303453, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.026
- Gunmetal #293241 ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.036
- Onyx #343A40 ΔE 0.045
- Midnight Green #073B4C ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.055
- Marine Blue #01386A ΔE 0.057
Use #303453 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.