#334688
Closest named color: Cobalt (#1E488F). oklch(41.5% 0.112 269), rgb(51, 70, 136).
Aa
White text reads best on this color (8.85:1).
About this color
#334688 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.112 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.023 away. White text reads best on it, at 8.85:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #334688 |
| RGB | rgb(51, 70, 136) |
| HSL | hsl(227, 45%, 37%) |
| OKLCH | oklch(41.5% 0.112 269) |
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 #334688 | 8.85:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #334688 | 2.37:1 | Fails | Lc 13.9 | Not readable |
| #334688 text on white | 8.85:1 | AAA | Lc 90.0 | Preferred for body text |
| #334688 text on black | 2.37:1 | Fails | Lc -12.2 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F2
oklch(88.5% 0.036 268.3)
-
Step 300
300
#AFC0EC
oklch(81% 0.065 268.4)
-
Step 400
400
#869EE2
oklch(70.8% 0.104 268.8)
-
Step 500
500
#6884DA
oklch(63.1% 0.134 268.8)
-
Step 600
600
#516CC8
oklch(55.7% 0.146 269)
-
Step 700
700
#4259AD
oklch(49% 0.136 269.3)
-
Step 800
800 (this color)
#334688
oklch(41.5% 0.112 269)
-
Step 900
900
#2F3E70
oklch(37.7% 0.088 269.3)
-
Step 950
950
#1B2541
oklch(27% 0.054 267.8)
#334688 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) | #264E8A | 0.024 |
| Deuteranopia (no green cones) | #174787 | 0.027 |
| Tritanopia (no blue cones) | #005560 | 0.097 |
| Achromatopsia (no color) | #4A4A4A | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334688
#334688
oklch(41.5% 0.112 269)
- #5E4800
#5E4800
oklch(41.3% 0.084 88.6)
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 #334688, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.023
- Dusk Blue #26538D ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.037
- Light Navy #155084 ΔE 0.038
- Blueberry #464196 ΔE 0.038
- Twilight Blue #0A437A ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.052
- Twilight #4E518B ΔE 0.052
Use #334688 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.