#1A4D99
Closest named color: Cobalt (#1E488F). oklch(43.2% 0.136 258.8), rgb(26, 77, 153).
Aa
White text reads best on this color (8.18:1).
About this color
#1A4D99 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.136 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.020 away. White text reads best on it, at 8.18:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.56:1 |
| White text | 8.18:1 |
Values
| HEX | #1A4D99 |
| RGB | rgb(26, 77, 153) |
| HSL | hsl(216, 71%, 35%) |
| OKLCH | oklch(43.2% 0.136 258.8) |
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 #1A4D99 | 8.18:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #1A4D99 | 2.56:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #1A4D99 text on white | 8.18:1 | AAA | Lc 87.8 | Fine for body text |
| #1A4D99 text on black | 2.56:1 | Fails | Lc -14.3 | Not readable |
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
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DBF7
oklch(88.6% 0.044 258)
-
Step 300
300
#A2C2F4
oklch(80.8% 0.079 259.2)
-
Step 400
400
#6FA1EF
oklch(70.7% 0.127 259)
-
Step 500
500
#4787EA
oklch(63% 0.163 258.9)
-
Step 600
600
#286FD8
oklch(55.7% 0.176 258.7)
-
Step 700
700
#1A5CBB
oklch(49.1% 0.164 258.6)
-
Step 800
800 (this color)
#1A4D99
oklch(43.2% 0.136 258.8)
-
Step 900
900
#1B4079
oklch(37.8% 0.106 258.9)
-
Step 950
950
#112647
oklch(27.1% 0.067 259.1)
#1A4D99 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) | #20559C | 0.024 |
| Deuteranopia (no green cones) | #004A97 | 0.016 |
| Tritanopia (no blue cones) | #005F6B | 0.104 |
| Achromatopsia (no color) | #4F4F4F | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A4D99
#1A4D99
oklch(43.2% 0.136 258.8)
- #6A4900
#6A4900
oklch(43.1% 0.089 79)
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 #1A4D99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.020
- Dusk Blue #26538D ΔE 0.030
- Light Navy #155084 ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.047
- Blueberry #464196 ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.059
Use #1A4D99 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.