#0243A2
Closest named color: Sapphire (#2138AB). oklch(41.2% 0.165 259.9), rgb(2, 67, 162).
Aa
White text reads best on this color (9.02:1).
About this color
#0243A2 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.165 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.031 away. White text reads best on it, at 9.02:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #0243A2 |
| RGB | rgb(2, 67, 162) |
| HSL | hsl(216, 98%, 32%) |
| OKLCH | oklch(41.2% 0.165 259.9) |
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 #0243A2 | 9.02:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #0243A2 | 2.32:1 | Fails | Lc 14.1 | Not readable |
| #0243A2 text on white | 9.02:1 | AAA | Lc 89.9 | Fine for body text |
| #0243A2 text on black | 2.32:1 | Fails | Lc -12.4 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DAFD
oklch(88.4% 0.054 260.6)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#659FFF
oklch(70.6% 0.154 260)
-
Step 500
500
#3984FE
oklch(63.2% 0.197 259.8)
-
Step 600
600
#1169ED
oklch(55.6% 0.214 259.9)
-
Step 700
700
#0056CE
oklch(49% 0.199 259.9)
-
Step 800
800 (this color)
#0243A2
oklch(41.2% 0.165 259.9)
-
Step 900
900
#113D84
oklch(37.6% 0.129 259.9)
-
Step 950
950
#0C254D
oklch(27.1% 0.08 259.5)
#0243A2 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) | #0050A5 | 0.034 |
| Deuteranopia (no green cones) | #0042A0 | 0.004 |
| Tritanopia (no blue cones) | #005B6C | 0.123 |
| Achromatopsia (no color) | #494949 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0243A2
#0243A2
oklch(41.2% 0.165 259.9)
- #634500
#634500
oklch(41.3% 0.085 80.3)
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 #0243A2, closest first.
No curated palette has a color within ΔE 0.04 of #0243A2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.031
- Cobalt #1E488F ΔE 0.038
- Blue Blue #2242C7 ΔE 0.063
- Dusk Blue #26538D ΔE 0.065
- Light Navy #155084 ΔE 0.065
- Blueberry #464196 ΔE 0.066
- Twilight Blue #0A437A ΔE 0.067
- Deep Sea Blue #015482 ΔE 0.075
Use #0243A2 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.