#1C284F
Closest named color: Oxford Blue (#1B263B). oklch(28.9% 0.073 268.7), rgb(28, 40, 79).
Aa
White text reads best on this color (14.32:1).
About this color
#1C284F is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.073 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.037 away. White text reads best on it, at 14.32:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.46:1 |
| White text | 14.32:1 |
Values
| HEX | #1C284F |
| RGB | rgb(28, 40, 79) |
| HSL | hsl(226, 48%, 21%) |
| OKLCH | oklch(28.9% 0.073 268.7) |
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 #1C284F | 14.32:1 | AAA | Lc -103.9 | Preferred for body text |
| Black text on #1C284F | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #1C284F text on white | 14.32:1 | AAA | Lc 100.9 | Preferred for body text |
| #1C284F text on black | 1.46:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9FA
oklch(88.6% 0.048 268.4)
-
Step 300
300
#A9BFF9
oklch(80.9% 0.086 268.4)
-
Step 400
400
#7D9BF7
oklch(70.6% 0.139 269)
-
Step 500
500
#5E7FF3
oklch(63% 0.177 268.9)
-
Step 600
600
#4665E2
oklch(55.5% 0.193 268.8)
-
Step 700
700
#3853C4
oklch(49% 0.179 268.7)
-
Step 800
800
#2E459F
oklch(42.7% 0.149 268.5)
-
Step 900
900
#293B7E
oklch(37.7% 0.115 269)
-
Step 950
950 (this color)
#1C284F
oklch(28.9% 0.073 268.7)
#1C284F 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) | #162D50 | 0.016 |
| Deuteranopia (no green cones) | #0F284E | 0.016 |
| Tritanopia (no blue cones) | #003137 | 0.065 |
| Achromatopsia (no color) | #2A2A2A | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C284F
#1C284F
oklch(28.9% 0.073 268.7)
- #372900
#372900
oklch(28.9% 0.059 88.7)
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 #1C284F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.037
- Marine #042E60 ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.042
- Gunmetal #293241 ΔE 0.051
- Dark #1B2431 ΔE 0.055
- Marine Blue #01386A ΔE 0.063
- Midnight Green #073B4C ΔE 0.064
Use #1C284F 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.