#3153A7
Closest named color: Dusk Blue (#26538D). oklch(46.4% 0.141 264.8), rgb(49, 83, 167).
Aa
White text reads best on this color (7.17:1).
About this color
#3153A7 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.141 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.045 away. White text reads best on it, at 7.17:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #3153A7 |
| RGB | rgb(49, 83, 167) |
| HSL | hsl(223, 55%, 42%) |
| OKLCH | oklch(46.4% 0.141 264.8) |
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 #3153A7 | 7.17:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #3153A7 | 2.92:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #3153A7 text on white | 7.17:1 | AAA | Lc 84.6 | Fine for body text |
| #3153A7 text on black | 2.92:1 | Fails | Lc -17.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F3
oklch(88.4% 0.038 265.8)
-
Step 300
300
#ABC1EE
oklch(81% 0.068 264.5)
-
Step 400
400
#7F9FE5
oklch(70.7% 0.109 265)
-
Step 500
500
#5F86DD
oklch(63.1% 0.138 264.5)
-
Step 600
600
#466DCB
oklch(55.5% 0.152 264.9)
-
Step 700
700 (this color)
#3153A7
oklch(46.4% 0.141 264.8)
-
Step 800
800
#2F4B8E
oklch(42.8% 0.116 264.9)
-
Step 900
900
#293F72
oklch(37.7% 0.092 264.8)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#3153A7 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) | #235DAA | 0.027 |
| Deuteranopia (no green cones) | #0052A5 | 0.030 |
| Tritanopia (no blue cones) | #006775 | 0.114 |
| Achromatopsia (no color) | #575757 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3153A7
#3153A7
oklch(46.4% 0.141 264.8)
- #725400
#725400
oklch(46.5% 0.095 84.6)
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 #3153A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.046
- Cobalt #1E488F ΔE 0.053
- Blueberry #464196 ΔE 0.054
- Twilight #4E518B ΔE 0.056
- Dusky Blue #475F94 ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.058
- Mid Blue #276AB3 ΔE 0.063
Use #3153A7 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.