#3042A4
Closest named color: Sapphire (#2138AB). oklch(42.7% 0.159 270.3), rgb(48, 66, 164).
Aa
White text reads best on this color (8.60:1).
About this color
#3042A4 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.159 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.033 away. White text reads best on it, at 8.60:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.44:1 |
| White text | 8.60:1 |
Values
| HEX | #3042A4 |
| RGB | rgb(48, 66, 164) |
| HSL | hsl(231, 55%, 42%) |
| OKLCH | oklch(42.7% 0.159 270.3) |
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 #3042A4 | 8.60:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #3042A4 | 2.44:1 | Fails | Lc 14.9 | Not readable |
| #3042A4 text on white | 8.60:1 | AAA | Lc 89.1 | Fine for body text |
| #3042A4 text on black | 2.44:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CCD8FC
oklch(88.5% 0.051 270.8)
-
Step 300
300
#A9BEFD
oklch(80.8% 0.092 270)
-
Step 400
400
#7D9AFD
oklch(70.8% 0.149 270)
-
Step 500
500
#5F7DFA
oklch(63.2% 0.189 270.1)
-
Step 600
600
#4862EA
oklch(55.7% 0.206 270.1)
-
Step 700
700
#3B50CB
oklch(49.2% 0.191 270.3)
-
Step 800
800 (this color)
#3042A4
oklch(42.7% 0.159 270.3)
-
Step 900
900
#2A3982
oklch(37.6% 0.124 270.6)
-
Step 950
950
#18224C
oklch(26.9% 0.079 270.3)
#3042A4 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) | #0051A7 | 0.043 |
| Deuteranopia (no green cones) | #0047A2 | 0.033 |
| Tritanopia (no blue cones) | #005A6C | 0.128 |
| Achromatopsia (no color) | #4C4C4C | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3042A4
#3042A4
oklch(42.7% 0.159 270.3)
- #614C00
#614C00
oklch(42.6% 0.087 90.4)
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 #3042A4, closest first.
No curated palette has a color within ΔE 0.04 of #3042A4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.033
- Blueberry #464196 ΔE 0.038
- Cobalt #1E488F ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.053
- Blue Blue #2242C7 ΔE 0.057
- Dusk Blue #26538D ΔE 0.062
- Majorelle Blue #3F37C9 ΔE 0.064
- Light Navy #155084 ΔE 0.071
Use #3042A4 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.