#2C3898
Closest named color: Sapphire (#2138AB). oklch(39.5% 0.156 271.7), rgb(44, 56, 152).
Aa
White text reads best on this color (9.87:1).
About this color
#2C3898 is a dark, vivid blue. In OKLCH its lightness is 39%, its chroma 0.156 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.033 away. White text reads best on it, at 9.87:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.12:1 |
| White text | 9.87:1 |
Values
| HEX | #2C3898 |
| RGB | rgb(44, 56, 152) |
| HSL | hsl(233, 55%, 38%) |
| OKLCH | oklch(39.5% 0.156 271.7) |
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 #2C3898 | 9.87:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #2C3898 | 2.12:1 | Fails | Lc 11.6 | Not readable |
| #2C3898 text on white | 9.87:1 | AAA | Lc 92.4 | Preferred for body text |
| #2C3898 text on black | 2.12:1 | Fails | Lc -10.0 | 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 900.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#AABDFF
oklch(80.8% 0.096 271.7)
-
Step 400
400
#7F98FF
oklch(70.6% 0.153 271.7)
-
Step 500
500
#627AFF
oklch(63.1% 0.198 271.8)
-
Step 600
600
#4857FF
oklch(55.6% 0.245 271.6)
-
Step 700
700
#3A40E6
oklch(49% 0.242 271.6)
-
Step 800
800
#2F37BA
oklch(42.7% 0.201 271.6)
-
Step 900
900 (this color)
#2C3898
oklch(39.5% 0.156 271.7)
-
Step 950
950
#171F56
oklch(27% 0.099 271.7)
#2C3898 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) | #00489B | 0.045 |
| Deuteranopia (no green cones) | #003E96 | 0.033 |
| Tritanopia (no blue cones) | #005062 | 0.125 |
| Achromatopsia (no color) | #434343 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C3898
#2C3898
oklch(39.5% 0.156 271.7)
- #564400
#564400
oklch(39.4% 0.081 91.6)
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 #2C3898, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.033
- Cobalt #1E488F ΔE 0.045
- Blueberry #464196 ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.051
- Indigo Blue #3A18B1 ΔE 0.064
- Twilight Blue #0A437A ΔE 0.065
- Dusk Blue #26538D ΔE 0.076
- Light Navy #155084 ΔE 0.076
Use #2C3898 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.