#1951A6
Closest named color: Cobalt (#1E488F). oklch(45% 0.149 259.1), rgb(25, 81, 166).
Aa
White text reads best on this color (7.58:1).
About this color
#1951A6 is a medium-dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.149 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.043 away. White text reads best on it, at 7.58:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #1951A6 |
| RGB | rgb(25, 81, 166) |
| HSL | hsl(216, 74%, 37%) |
| OKLCH | oklch(45% 0.149 259.1) |
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 #1951A6 | 7.58:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #1951A6 | 2.76:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #1951A6 text on white | 7.58:1 | AAA | Lc 85.8 | Fine for body text |
| #1951A6 text on black | 2.76:1 | Fails | Lc -16.2 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9FC2F9
oklch(80.8% 0.087 259.3)
-
Step 400
400
#6AA1F6
oklch(70.8% 0.138 258.8)
-
Step 500
500
#4086F3
oklch(63.1% 0.178 259.1)
-
Step 600
600
#1E6DE2
oklch(55.7% 0.193 259.1)
-
Step 700
700
#0F5AC4
oklch(49.2% 0.18 259.1)
-
Step 800
800 (this color)
#1951A6
oklch(45% 0.149 259.1)
-
Step 900
900
#163F7E
oklch(37.7% 0.116 259.1)
-
Step 950
950
#0E254A
oklch(26.9% 0.075 259.5)
#1951A6 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) | #195BA9 | 0.028 |
| Deuteranopia (no green cones) | #004EA4 | 0.015 |
| Tritanopia (no blue cones) | #006673 | 0.115 |
| Achromatopsia (no color) | #545454 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1951A6
#1951A6
oklch(45% 0.149 259.1)
- #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 #1951A6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.043
- Dusk Blue #26538D ΔE 0.043
- Light Navy #155084 ΔE 0.056
- Denim Blue #3B5B92 ΔE 0.057
- Sapphire #2138AB ΔE 0.061
- Blueberry #464196 ΔE 0.061
- Light Navy Blue #2E5A88 ΔE 0.062
- Deep Sea Blue #015482 ΔE 0.063
Use #1951A6 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.