#1951A1
Closest named color: Dusk Blue (#26538D). oklch(44.7% 0.142 258.3), rgb(25, 81, 161).
Aa
White text reads best on this color (7.68:1).
About this color
#1951A1 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.142 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.035 away. White text reads best on it, at 7.68:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.73:1 |
| White text | 7.68:1 |
Values
| HEX | #1951A1 |
| RGB | rgb(25, 81, 161) |
| HSL | hsl(215, 73%, 36%) |
| OKLCH | oklch(44.7% 0.142 258.3) |
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 #1951A1 | 7.68:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #1951A1 | 2.73:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #1951A1 text on white | 7.68:1 | AAA | Lc 86.2 | Fine for body text |
| #1951A1 text on black | 2.73:1 | Fails | Lc -15.9 | 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
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF8
oklch(88.6% 0.046 257.6)
-
Step 300
300
#A0C3F7
oklch(81% 0.083 258.1)
-
Step 400
400
#6BA1F2
oklch(70.6% 0.133 258.3)
-
Step 500
500
#4287EE
oklch(63.1% 0.17 258.4)
-
Step 600
600
#1F6EDC
oklch(55.5% 0.184 258.3)
-
Step 700
700
#115BBF
oklch(49% 0.172 258.4)
-
Step 800
800 (this color)
#1951A1
oklch(44.7% 0.142 258.3)
-
Step 900
900
#17407B
oklch(37.8% 0.11 258.1)
-
Step 950
950
#0F2648
oklch(27.1% 0.07 258.2)
#1951A1 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) | #215AA4 | 0.027 |
| Deuteranopia (no green cones) | #004D9F | 0.017 |
| Tritanopia (no blue cones) | #006471 | 0.108 |
| Achromatopsia (no color) | #535353 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1951A1
#1951A1
oklch(44.7% 0.142 258.3)
- #704D00
#704D00
oklch(44.7% 0.093 78.6)
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 #1951A1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.035
- Cobalt #1E488F ΔE 0.036
- Light Navy #155084 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.055
- Blueberry #464196 ΔE 0.059
- Sapphire #2138AB ΔE 0.064
Use #1951A1 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.