#0247A0
Closest named color: Cobalt (#1E488F). oklch(41.9% 0.157 258.6), rgb(2, 71, 160).
Aa
White text reads best on this color (8.70:1).
About this color
#0247A0 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.157 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.031 away. White text reads best on it, at 8.70:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.41:1 |
| White text | 8.70:1 |
Values
| HEX | #0247A0 |
| RGB | rgb(2, 71, 160) |
| HSL | hsl(214, 98%, 32%) |
| OKLCH | oklch(41.9% 0.157 258.6) |
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 #0247A0 | 8.70:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #0247A0 | 2.41:1 | Fails | Lc 14.9 | Not readable |
| #0247A0 text on white | 8.70:1 | AAA | Lc 89.1 | Fine for body text |
| #0247A0 text on black | 2.41:1 | Fails | Lc -13.1 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9CC2FC
oklch(80.8% 0.092 258.7)
-
Step 400
400
#65A1FB
oklch(70.8% 0.147 258.3)
-
Step 500
500
#3885F8
oklch(63% 0.188 258.6)
-
Step 600
600
#0C6CE7
oklch(55.7% 0.203 258.4)
-
Step 700
700
#0059C7
oklch(49% 0.186 258.6)
-
Step 800
800 (this color)
#0247A0
oklch(41.9% 0.157 258.6)
-
Step 900
900
#113F81
oklch(37.8% 0.122 258.4)
-
Step 950
950
#0C254B
oklch(26.9% 0.077 258.8)
#0247A0 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) | #0052A3 | 0.030 |
| Deuteranopia (no green cones) | #00459E | 0.006 |
| Tritanopia (no blue cones) | #005D6C | 0.118 |
| Achromatopsia (no color) | #4B4B4B | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0247A0
#0247A0
oklch(41.9% 0.157 258.6)
- #664600
#664600
oklch(41.9% 0.087 78.9)
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 #0247A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.031
- Sapphire #2138AB ΔE 0.040
- Dusk Blue #26538D ΔE 0.054
- Light Navy #155084 ΔE 0.056
- Blueberry #464196 ΔE 0.063
- Twilight Blue #0A437A ΔE 0.063
- Deep Sea Blue #015482 ΔE 0.066
- Blue Blue #2242C7 ΔE 0.066
Use #0247A0 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.