#052F3F
Closest named color: Oxford Blue (#1B263B). oklch(28.6% 0.052 229), rgb(5, 47, 63).
Aa
White text reads best on this color (14.14:1).
About this color
#052F3F is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.052 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.034 away. White text reads best on it, at 14.14:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.48:1 |
| White text | 14.14:1 |
Values
| HEX | #052F3F |
| RGB | rgb(5, 47, 63) |
| HSL | hsl(197, 85%, 13%) |
| OKLCH | oklch(28.6% 0.052 229) |
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 #052F3F | 14.14:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #052F3F | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #052F3F text on white | 14.14:1 | AAA | Lc 100.6 | Preferred for body text |
| #052F3F text on black | 1.48:1 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEECF4
oklch(93.5% 0.018 232.5)
-
Step 200
200
#C3DEEC
oklch(88.5% 0.035 230.3)
-
Step 300
300
#97C9E1
oklch(80.9% 0.062 229.1)
-
Step 400
400
#56ACD2
oklch(70.6% 0.1 229.3)
-
Step 500
500
#0097C5
oklch(63.2% 0.124 228.7)
-
Step 600
600
#007EA6
oklch(55.5% 0.11 229.3)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004861
oklch(37.6% 0.075 229.8)
-
Step 950
950 (this color)
#052F3F
oklch(28.6% 0.052 229)
#052F3F 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) | #272E40 | 0.037 |
| Deuteranopia (no green cones) | #1F293F | 0.031 |
| Tritanopia (no blue cones) | #003334 | 0.029 |
| Achromatopsia (no color) | #2B2B2B | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #052F3F
#052F3F
oklch(28.6% 0.052 229)
- #3F2211
#3F2211
oklch(28.6% 0.052 49.9)
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 #052F3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.034
- Dark #1B2431 ΔE 0.042
- Gunmetal #293241 ΔE 0.043
- Midnight Green #073B4C ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.045
- Jet #212529 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.053
Use #052F3F 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.