#184FA4
Closest named color: Cobalt (#1E488F). oklch(44.4% 0.149 259.4), rgb(24, 79, 164).
Aa
White text reads best on this color (7.79:1).
About this color
#184FA4 is a dark, vivid blue. In OKLCH its lightness is 44%, 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 0.037 away. White text reads best on it, at 7.79:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #184FA4 |
| RGB | rgb(24, 79, 164) |
| HSL | hsl(216, 74%, 37%) |
| OKLCH | oklch(44.4% 0.149 259.4) |
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 #184FA4 | 7.79:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #184FA4 | 2.69:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #184FA4 text on white | 7.79:1 | AAA | Lc 86.5 | Fine for body text |
| #184FA4 text on black | 2.69:1 | Fails | Lc -15.6 | 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
#C7DAFA
oklch(88.4% 0.049 260.9)
-
Step 300
300
#9FC2F9
oklch(80.8% 0.087 259.3)
-
Step 400
400
#6AA0F6
oklch(70.6% 0.139 259.4)
-
Step 500
500
#4186F3
oklch(63.1% 0.178 259.3)
-
Step 600
600
#1F6CE2
oklch(55.6% 0.194 259.5)
-
Step 700
700
#115AC4
oklch(49.2% 0.179 259.3)
-
Step 800
800 (this color)
#184FA4
oklch(44.4% 0.149 259.4)
-
Step 900
900
#173F7E
oklch(37.8% 0.116 259.4)
-
Step 950
950
#0F254A
oklch(27% 0.074 260.2)
#184FA4 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) | #1559A7 | 0.027 |
| Deuteranopia (no green cones) | #004CA2 | 0.015 |
| Tritanopia (no blue cones) | #006472 | 0.114 |
| Achromatopsia (no color) | #525252 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184FA4
#184FA4
oklch(44.4% 0.149 259.4)
- #6E4D00
#6E4D00
oklch(44.5% 0.092 80.2)
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 #184FA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.037
- Dusk Blue #26538D ΔE 0.042
- Light Navy #155084 ΔE 0.054
- Sapphire #2138AB ΔE 0.057
- Blueberry #464196 ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.059
- Deep Sea Blue #015482 ΔE 0.061
- Light Navy Blue #2E5A88 ΔE 0.063
Use #184FA4 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.