#03212F
Closest named color: Rich Black (#0D1B2A). oklch(23.4% 0.044 232.6), rgb(3, 33, 47).
Aa
White text reads best on this color (16.63:1).
About this color
#03212F is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.044 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 16.63:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.26:1 |
| White text | 16.63:1 |
Values
| HEX | #03212F |
| RGB | rgb(3, 33, 47) |
| HSL | hsl(199, 88%, 10%) |
| OKLCH | oklch(23.4% 0.044 232.6) |
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 #03212F | 16.63:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #03212F | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #03212F text on white | 16.63:1 | AAA | Lc 103.4 | Preferred for body text |
| #03212F text on black | 1.26:1 | 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 950.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#A0C7DD
oklch(80.9% 0.052 233)
-
Step 400
400
#68AACC
oklch(70.7% 0.084 232.1)
-
Step 500
500
#3894BF
oklch(63.1% 0.107 232.4)
-
Step 600
600
#007DAB
oklch(55.5% 0.115 233.2)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#0F4760
oklch(37.6% 0.07 232.9)
-
Step 950
950 (this color)
#03212F
oklch(23.4% 0.044 232.6)
#03212F 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) | #1A2130 | 0.029 |
| Deuteranopia (no green cones) | #141C2F | 0.025 |
| Tritanopia (no blue cones) | #002526 | 0.027 |
| Achromatopsia (no color) | #1E1E1E | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03212F
#03212F
oklch(23.4% 0.044 232.6)
- #2E1708
#2E1708
oklch(23.3% 0.045 52.1)
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 #03212F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Dark #1B2431 ΔE 0.033
- Oxford Blue #1B263B ΔE 0.042
- Jet #212529 ΔE 0.045
- Rich Navy #001219 ΔE 0.066
- Navy Blue #001146 ΔE 0.072
- Space Cadet #2B2D42 ΔE 0.079
- Gunmetal #293241 ΔE 0.085
Use #03212F 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.