#1651A8
Closest named color: Cobalt (#1E488F). oklch(45.1% 0.152 258.9), rgb(22, 81, 168).
Aa
White text reads best on this color (7.56:1).
About this color
#1651A8 is a medium-dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.152 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.045 away. White text reads best on it, at 7.56:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.77:1 |
| White text | 7.56:1 |
Values
| HEX | #1651A8 |
| RGB | rgb(22, 81, 168) |
| HSL | hsl(216, 77%, 37%) |
| OKLCH | oklch(45.1% 0.152 258.9) |
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 #1651A8 | 7.56:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #1651A8 | 2.77:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #1651A8 text on white | 7.56:1 | AAA | Lc 85.7 | Fine for body text |
| #1651A8 text on black | 2.77:1 | Fails | Lc -16.3 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9EC2FA
oklch(80.8% 0.089 259.1)
-
Step 400
400
#68A1F8
oklch(70.8% 0.142 258.6)
-
Step 500
500
#3D86F5
oklch(63.1% 0.182 258.8)
-
Step 600
600
#186CE4
oklch(55.6% 0.198 259)
-
Step 700
700
#0859C6
oklch(49% 0.184 259)
-
Step 800
800 (this color)
#1651A8
oklch(45.1% 0.152 258.9)
-
Step 900
900
#143F7F
oklch(37.7% 0.118 258.7)
-
Step 950
950
#0D254A
oklch(26.9% 0.075 258.9)
#1651A8 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) | #155BAB | 0.027 |
| Deuteranopia (no green cones) | #004EA6 | 0.014 |
| Tritanopia (no blue cones) | #006674 | 0.116 |
| Achromatopsia (no color) | #545454 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1651A8
#1651A8
oklch(45.1% 0.152 258.9)
- #714E00
#714E00
oklch(45.1% 0.094 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 #1651A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.045
- Dusk Blue #26538D ΔE 0.046
- Light Navy #155084 ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.060
- Sapphire #2138AB ΔE 0.060
- Blue Blue #2242C7 ΔE 0.061
- Blueberry #464196 ΔE 0.063
- Light Navy Blue #2E5A88 ΔE 0.065
Use #1651A8 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.