#2153A7
Closest named color: Dusk Blue (#26538D). oklch(45.8% 0.146 260.2), rgb(33, 83, 167).
Aa
White text reads best on this color (7.34:1).
About this color
#2153A7 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.146 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.042 away. White text reads best on it, at 7.34:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.85:1 |
| White text | 7.34:1 |
Values
| HEX | #2153A7 |
| RGB | rgb(33, 83, 167) |
| HSL | hsl(218, 67%, 39%) |
| OKLCH | oklch(45.8% 0.146 260.2) |
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 #2153A7 | 7.34:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #2153A7 | 2.85:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #2153A7 text on white | 7.34:1 | AAA | Lc 85.0 | Fine for body text |
| #2153A7 text on black | 2.85:1 | Fails | Lc -17.0 | 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 800.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFB
oklch(93.7% 0.024 259.8)
-
Step 200
200
#C7DAF9
oklch(88.4% 0.048 260.2)
-
Step 300
300
#A1C2F8
oklch(80.9% 0.085 260.1)
-
Step 400
400
#6DA0F5
oklch(70.7% 0.137 260.2)
-
Step 500
500
#4686F1
oklch(63.2% 0.174 260.1)
-
Step 600
600
#276CE0
oklch(55.6% 0.19 260.3)
-
Step 700
700
#1A59C2
oklch(49% 0.176 260.4)
-
Step 800
800 (this color)
#2153A7
oklch(45.8% 0.146 260.2)
-
Step 900
900
#1A3F7D
oklch(37.8% 0.114 260.1)
-
Step 950
950
#102549
oklch(26.9% 0.072 260.4)
#2153A7 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) | #205CAA | 0.025 |
| Deuteranopia (no green cones) | #0050A5 | 0.019 |
| Tritanopia (no blue cones) | #006775 | 0.112 |
| Achromatopsia (no color) | #565656 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2153A7
#2153A7
oklch(45.8% 0.146 260.2)
- #735000
#735000
oklch(45.7% 0.095 79.5)
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 #2153A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.042
- Cobalt #1E488F ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.059
- Light Navy #155084 ΔE 0.059
- Blueberry #464196 ΔE 0.061
- Deep Sea Blue #015482 ΔE 0.065
- Dusky Blue #475F94 ΔE 0.065
Use #2153A7 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.