#034197
Closest named color: Cobalt (#1E488F). oklch(39.8% 0.152 259.2), rgb(3, 65, 151).
Aa
White text reads best on this color (9.51:1).
About this color
#034197 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.152 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.030 away. White text reads best on it, at 9.51:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.20:1 |
| White text | 9.51:1 |
Values
| HEX | #034197 |
| RGB | rgb(3, 65, 151) |
| HSL | hsl(215, 96%, 30%) |
| OKLCH | oklch(39.8% 0.152 259.2) |
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 #034197 | 9.51:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #034197 | 2.20:1 | Fails | Lc 12.7 | Not readable |
| #034197 text on white | 9.51:1 | AAA | Lc 91.2 | Preferred for body text |
| #034197 text on black | 2.20:1 | Fails | Lc -11.1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFF
oklch(93.6% 0.031 258.9)
-
Step 200
200
#C3DBFF
oklch(88.5% 0.056 258.4)
-
Step 300
300
#9BC2FF
oklch(80.8% 0.097 259.2)
-
Step 400
400
#64A0FF
oklch(70.8% 0.153 259.2)
-
Step 500
500
#3484FF
oklch(63.1% 0.199 259.1)
-
Step 600
600
#0069EF
oklch(55.6% 0.218 259.2)
-
Step 700
700
#0058CB
oklch(49.1% 0.193 259.2)
-
Step 800
800
#0048A8
oklch(42.8% 0.167 259.1)
-
Step 900
900 (this color)
#034197
oklch(39.8% 0.152 259.2)
-
Step 950
950
#042354
oklch(26.9% 0.096 259.4)
#034197 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) | #004C9A | 0.030 |
| Deuteranopia (no green cones) | #003F95 | 0.007 |
| Tritanopia (no blue cones) | #005765 | 0.116 |
| Achromatopsia (no color) | #454545 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034197
#034197
oklch(39.8% 0.152 259.2)
- #5F4100
#5F4100
oklch(39.9% 0.083 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 #034197, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.030
- Sapphire #2138AB ΔE 0.041
- Twilight Blue #0A437A ΔE 0.049
- Light Navy #155084 ΔE 0.058
- Dusk Blue #26538D ΔE 0.062
- Blueberry #464196 ΔE 0.066
- Deep Sea Blue #015482 ΔE 0.069
- Dark Slate Blue #483D8B ΔE 0.072
Use #034197 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.